It has become common for modern organizations to use advanced information systems for helping their daily operational task. However, there is still a large demand for software solutions that enable straightforward data analysis from these systems. Aiming to solve this problem, Business Intelligence (BI) environments were created. Electronic Government (e-Gov) systems, which typically work with governmental operational data, can take great benefits from a BI environment. Therefore, in e-Gov systems BI tools can be used, among others, to pursue the following goals: enhance the relationship between city and state government and the citizen; help administrating public resources; monitor the impacts of public policies upon the society. This paper presents a proposal for creating a BI environment for Electronic Government systems, using open source technologies with a special application to Social Welfare, developed for the city of Campinas, SP, Brazil.